import java.util.HashMap;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: H_tao_X
 * Date: 2022-12-05
 * Time: 19:35
 */
public class Demo1 {
    public static void main(String[] args) {
        // 一维数组
        int[] a = new int[3];
        int[] b = new int[]{1, 3};
        // 二位数组
        int[][] c = new int[1][1];
        int[][] d = new int[][]{{1, 2}, {3, 4}};


    }
}
